1717157047 has 2 divisors, whose sum is σ = 1717157048. Its totient is φ = 1717157046.

The previous prime is 1717157033. The next prime is 1717157059. The reversal of 1717157047 is 7407517171.

It is a strong prime.

It is an emirp because it is prime and its reverse (7407517171) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1717157047 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1717157447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 858578523 + 858578524.

It is an arithmetic number, because the mean of its divisors is an integer number (858578524).

Almost surely, 2^1717157047 is an apocalyptic number.

1717157047 is a deficient number, since it is larger than the sum of its proper divisors (1).

1717157047 is an equidigital number, since it uses as much as digits as its factorization.

1717157047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48020, while the sum is 40.

The square root of 1717157047 is about 41438.5936899408. The cubic root of 1717157047 is about 1197.4847889537.

The spelling of 1717157047 in words is "one billion, seven hundred seventeen million, one hundred fifty-seven thousand, forty-seven".